Incinerator



Aug. 16, 1932. w. v. JQljNSTON 1,871,614

INC INERATOR Filed Oct. 15, 1930 2 Sheets-Sheet 2 oaoooaooooAAeeoeooOoo W Kelbhnskn,

ATTORNEY Patented Aug. 16, 1932 UITE STTES INCINERAT'OR Application filed October 15, 1930. Serial No. 488,911.

This invention relates to incinerators and has for an object the provision of a collapsible incinerator which may be shipped or stored in knockdown condition, and quickly and easily set up for use.

Another object of the invention is the provision of an incinerator which is simple and economical in construction, light in weight, will resist heat, and will not be easily bro-ken.

With the above and other objects in view, the invention further includes the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claim.

In the drawings:

Figure 1 is an elevation of an incinerator constructed in accordance with the invention.

Figure 2 is a section on the line 22 of Figure 1.

Figure 3 is an elevation at right angles to Figure 1 with parts broken away.

Figure 4 is a section on the line 44 of Figure 3.

I Figure 5 is a perspective view of the ash chamber door.

Referring in detail to the drawings wherein like characters of reference denote corresponding parts, the incinerator as shown comprises a bottom 10 and upwardly extending walls 11. The bottom and walls are made of strong, light, heat-resisting material such as serpentine rock. This rock is found in the locality of Casper, Wyoming, in large quantities and possesses all of the characteristics mentioned.

The bottom 10 is mortised around its edges as shown at 12 to receive the lower edges of the walls 11, so that a shoulder is provided against which the lower edges of the walls abut. The adjacent edges of the walls 10 are grooved as shown at 13 to provide outstanding tongues 13. The tongues and grooves are designed for interengagement when the plates are associated to provide the body of the incinerator.

The walls 11 are relatively inclined, and are held together by means of a band 14 which is slipped around these walls. This band also serves to retain the walls 11 upon the base 10 in that it prevents horizontal movement of the walls.

The walls 11 are each provided with a series of transverse apertures 15, to receive therethrough fingers 16 which extend out- Wardly from the edges of a grate 17 which is square in plan. This grate is shown as composed of woven wire, but it may be made of any suitable material. The grate divides the incinerator into a combustion chamber 18 and an ash chamber 19, and the latter is provided with an opening 20. This opening is located in one of the walls 11 and may be closed by means of a door 21. The door is hing-edly mounted, and for this purpose is provided with curved fingers 22 which move within openings 23, spaced above the door opening 20. The door may be adjusted to regulate the draft through the incinerator. When the walls or plates are associated in a manner as above described they present a body which is of frustopyramidal formation.

By removing the band 14, the walls 11, i I

grate 17 and base 10 may be readily separated and packed for storage or shipment.

The invention'is susceptible of various top, and the side edges of said plates being provided with a mortised joint for interengagement providing a hollow frustopyramidal body, a grate which is'square in plan and which has fingers projecting from its edges, said fingers adapted to pass through the apertures in said plates to hold the grate in the body and to assist in holding the body plates associated, and a metal band which is square in plan and which is designed to be passed over the upper and reduced end of the body and to be brought into frictional contact with the sides of the body for holding the plates constituting the body removably associated.

In testimony whereof I aflix my signature.

WVILLIAM V. JOHNSTON. 

